/*
 * Copyright 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.glance.wear.tiles

import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.toArgb
import androidx.glance.BackgroundModifier
import androidx.glance.ColorFilter
import androidx.glance.GlanceModifier
import androidx.glance.ImageProvider
import androidx.glance.TintColorFilterParams
import androidx.glance.background
import androidx.glance.findModifier
import androidx.glance.unit.ColorProvider
import androidx.glance.unit.FixedColorProvider
import androidx.glance.unit.ResourceColorProvider
import androidx.glance.wear.tiles.test.R
import com.google.common.truth.Truth.assertThat
import kotlin.test.assertIs
import org.junit.Test

class BackgroundTest {
    @Test
    fun canUseBackgroundModifier() {
        val modifier: GlanceModifier = GlanceModifier.background(color = Color(0xFF223344))

        val addedModifier: BackgroundModifier.Color =
            requireNotNull(modifier.findModifier<BackgroundModifier.Color>())

        val modifierColors = addedModifier.colorProvider
        assertIs<FixedColorProvider>(modifierColors)

        // Note: 0xFF223344 will coerce to a Long in Kotlin (making the equality test fail).
        // .toInt() is required here to make the tests work properly.
        assertThat(modifierColors.color.toArgb()).isEqualTo(0xFF223344.toInt())
    }

    @Test
    fun canUseBackgroundModifier_resId() {
        val modifier = GlanceModifier.background(color = R.color.color1)

        val addedModifier: BackgroundModifier.Color =
            requireNotNull(modifier.findModifier<BackgroundModifier.Color>())

        val modifierColors = addedModifier.colorProvider
        assertIs<ResourceColorProvider>(modifierColors)
        assertThat(modifierColors.resId).isEqualTo(R.color.color1)
    }

    @Test
    fun canUseBackgroundModifier_colorFilteredImage() {
        fun tintColor() = ColorProvider(Color.Magenta)

        val modifier =
            GlanceModifier.background(
                ImageProvider(R.drawable.oval),
                colorFilter = ColorFilter.tint(tintColor())
            )

        val addedModifier: BackgroundModifier.Image =
            requireNotNull(modifier.findModifier<BackgroundModifier.Image>())

        assertThat(
                (addedModifier.colorFilter?.colorFilterParams as TintColorFilterParams)
                    .colorProvider
            )
            .isEqualTo(tintColor())
    }
}
